Olivia Newton-John, whose new wedding-themed comedy A Few Best Men will open in the spring, has been a longtime favorite of LGBT fans and a supporter of marriage equality. In July, the singer spoke to The Advocateabout her experience performing at New York's gay pride the night after same-sex marriage was legalized in the state. "The air was electric, and there was so much excitement in the air from the couples," she said. "It’s wonderful that it can be recognized. People who have had long relationships and care about each and take care of each other should have the right to be married." Watch her perform "Have Yourself a Merry Little Christmas" below.